Furnace-port-cooling means.



No. 896,937. PATENTBD AUG. 25, 1908. P. E. PARKS & H. A. DEUEL. FURNACEPORT COOLING MEANS.

APPLICATION FILED MAR. 3, 1908.

2 SHEETS-SHEET l.

awuenlfozs ianna/4g N0. 896,937v PATENTED AUG. 25, 1908.

F. E. PARKS & H. A. DEUEL. FURNACE PORT COOLING.MEANS.

APPLICATION FILED'MAR. 3, 1908.

2 SHEETS-SHEET 2.

UNITED STATES PATENT OFFICE.

FRANK E. PARKS AND HARRY A. DEUEL, OF PUEBLO, COLORADO.

FURNACE PORT-COOLING MEANS.

Specification of Letters Patent.

Patented Aug. 25, 1908.

Application filed March 3, 1908. Serial No. 418,996.

T 0 all whom it ma 1 concern:

Be it known that we; F RANK E. PARKS and HARRY A. DEUEL, citizens of theUnited States, residing at Pueblo, in the county of Pueblo and State ofC()l()I'L(lO, have invented certain new and useful Improvements inFurnace-Port-(Tooling Means, of which the following a specification. I

Our invention relates to arch cooling means for the gas ports ofmetallurgical furnaces, and its object is to provide a constructionwhereby the arch is elliciently cooled while remaining self supporting;the refractory material of the arch being protected without abstractingany appreciable portion of the heat imparted to the gas by theregenerators or to the products of combustion heating the oppositeregenerators. At the same time, the walls of the-ports are preventedfrom cutting back, particularly at their junction with the furnace;thereby preserving their original construction and dimensions andkeeping the gas confined so that it does not spread and cut the frontand back walls of the furnace. advantages by the construction shown inthe accompanying drawing, in which Figure l. is a diagrammaticlongitudinal section of one half of an ordinary form of open hearthfurnace, showing the manner of applying our invention; Fig. 2 is similarview of a portion of the outer end of the arch, corresponding to asection-on the line Il-II of Fig. 3, and Fig. 3 is an end view of thearch structure showing the water-supply' and discharge connections inelevation.

1 is the body of the furnace supplied by 2 leading, at 3, to the theusual gas ports regenerators or slag pockets (not shown). I

The arch, 4, of the ports is constructed of suitable refractorymaterial, preferably silica brick,- and immediately above the arch areplaced a plurality of pipes 5, extending longitudinally thereof asnearly as practicable to the inner or furnace end of the arch; the innerends of these pipes being suitably closed at 6, (Fi 1) preferably bywelding.

The outer end of each pipe is fitted with a T, 7, one end of which maybe partially closed by a reducer 8, while the side connection 9 isfitted with a short discharge pipe 10.

Passing inside each of the pipes 5, and secured therein by the reducers,are lengths of smaller supply pipe 11, open at their inner ends 12(Fig. 1) and each fitted at its outer end with a cook. or valve 13.

We secure these Short I be used,

1] outside the valves 13, to Ts or other suit-- able fittings 15, on acommon supply pipe 16; though any other preferred arrai'igmncnt may besubstituted which will permit each pipe 11 to be supplied imlependentlyof the others; for exainple, independent supplies, instead of a commonpipe 6, might be provided; adapted for ready disconnection and theapplication of higher-pressure connections, for cleaning in case ofstoppage.

The overflow pipes 10 empty into a common waste trough 17, preferablysupported in a slightly inclined length of channel-iron 18, carried bybrackets 19, secured to the buck-stays 20. A sewer connection 21 isprovided at the lower end of the watertrough.

Any desired number of cooling pipes may and of suitable stock sizes; -3;inch pipes with one inch supplies and overflows having been foundadequate. By flatteningthe pipes 5 to elliptical cross section Where theY are embedded in the arch and ellipses llOl'lZOll-' arranging longeraxes of the tally, the cooling eiiect may be more evenly distributed onthe upper surface of the. arch, if desired. 1

- It will be notedthat the incoming cold water is discharged at theinner ends of the pipes over the hottest portion of the arch; and thatif leakage occurs in any pipe its supply may be temporarily cut oil tillrepairs can be made. Moreover, if stoppage occurs in any pipe, the fullforce of the supply may be thrown through it by closing the other supplypipes.

After the cooling tact with the upper surface of the arch bricks, thearches are tainped up to the required thickness with silica sand,magnesite or other suitable refractory material; thereby protecting thepipes from the flame of the furnace, giving close contact with thecooling surface of the pipe and insuring maximum radiation.

pipes are laid in close con.-

nipples 14 may be used to connect the pipes,

Although we have illustrated anddescribed vided below the arch andwithin the port and that arches, both upright and inverted, have beensupported by a grid or frame-work of cooling plpes; but the advanta esof our invention result from the fact t at the ordinary form of arch isefficiently cooled and rendered durably self-supporting, the coolingsystem itself made more durable by reason of its sustaining no we' ht ofWall, and the .full available heat of t e gases utilized by port-arches,comprising a plurality of fluidcirculating conduits arrangedlongitudinally of and in close contact with the upper side of thearch-wall and embedded in refractory material, and independentfluid-supply connections to each conduit; substantially as described. av I 3. .Coolin meansfor furnace-ports, -comprising a se f-supportingarch, a lurality of fluid conduits for absorbing an conveying heat fromsaid arch, said conduits being 10- cated out of contact with the he edgases, and means for supplying a cooling fluid to said conduits at thehottest part of said arch; substantially as described 4. A furnace-porthaving a self-supportin arch, a pluralitfy; of water-pipes arrange longtudinally o the upper surface thereof, independent supply connectionsfor each 2. Cooling means for regenerative-furnace pipe, and a commondischarge-trough for the pipes; substantiall as described.

5. A water-coo ed port for open-hearth furnaces, comprising aself-supporting arch of refractory material, a plura ity of coolingpipes arranged in close contact with the upper side of said arch, anindependent fluidsupply pipe arranged to discharge fluidat the inner endof each coolingi c, closing means for each su ply-pipe and dischargeorifices for the coo ing pipes; substantially as described.

6. A water-cooled gas-port for open-hearth furnaces, comprising aself-supporting arch, a lurality of cooling-pipes arranged longi tuinally in close contact with the outer side of said arch, fluid-supplypipes arranged to discharge a cooling-fluid near the closed end of eachcooling pipe, independent closing means for each su ply-pipe, a commoncollecting trough for t e heated fluid discharged from thecooling-pipes, and heat protecting and -radiating material closelycovering said (2001' -pipes; substantially as described.

7. OOlIIIg means for regenerative furnace ports, comprisin aself-supporting refractory arch, a plura ity of fluid-circulating con--duitsarranged-longitudinally of and embedded in the refractory arch outof contactwith the heated gases, and independent fluidsupply connectionsarrangedto supply cool- I ing fluid to said conduits at the hottest partof the arch; substantially as described.

In testimony whereof we aflix our signatures in presence of twowitnesses.

FRANK EIPAR'KS, HARRY, A. DEUEL.

Witnesses:

JAMES H. .ROBINSON, vJ. H. MEANS.

